Coordination developer



Patented Aug. 31, 1926.

UNITED STATES HARRY L. FUOG, OF LOS ANGELES, CALIFORNIA;

GOORDINATIONl DEVELOPER.

Application filed August 22, 1925. seran No. 51,834.

ln this specification, and the accompanying drawing, I shall describeand show a preferred form of my invention, and specifically mentioncertain of its more important objects'. I do not limit myself to theforms disclosed, since various changes and adaptations may be madetherein Without departing from the essence of my invention ashereinafter claimed; and objects and advantages, other than thosespecifically mentioned, are included within its'scope.

My invention relates yto devices for developing and increasingcoordination of the human eyes. lts more important objects include;first, to provide an instrument whereby a spot of light may bev made todescribe circles of variable radius upon a screen perpendicular to theaxis of the instrument, and ellipses of variable size and proportionsupon a screen-inclined to said axis; second, to furnish facilities forreversing the direction of motion of the light spot in any of the abovecases; t-hird, to supply means for making the light'spot reciprocate ina rectilinear path at any desired angle with respect to the horizon,and-with variable` amplitudes; fourth, to furnish means for varying thevelocity of the light spot when it is moving in any of theaforementioned ways; and, fifth, to accomplish all of the above objectsin a simple and relatively inexpensive manner, and by means of a devicein which all Aot the necessary adjustments are convenient to make.

My objects are attained' in the manner illustrated in the accompanyingdrawing,

Figure 1 is a front elevation of my invention, and

Figure 2 is a side elevation of the device with certain parts .brokenand shown in section on the line 2 2 of Figure 1. This iigure alsoincludes a-.diagram of the electrical connections.l p

Similar reference. numerals refer to similar parts throughout bothviews.

Before passing to'a detailed description of my invention, it is to benoted that a moving spot of light, when traversing prescribedpaths atcontrollable speed and direction, `is admittedly one of the best knownmeans for promoting increased functioning of the fusion or coordinationcenter of the brain. The moving light spot commands and holds theattention ofthe patient and, by following it with the eyes alongproperly prescribed paths, the enervated or otherwise defective eyemuscles are exercised and stimulated, and may gradually be brought intoproper and natural co-ao'tion with other binocular movements. Theresulting beneticial stimulation and exercise of the visual..

motor centers of the brain will increase the speed of ocular rotationand fixation, and

for illustrative purposes comprises apedestal frame 3 with an elongatedhorizontal journal bearing a1 at the top, one end of the journal beingprovided with a circular liange 5. A large circular disk 6, having anintegral axial quill 7, is journalled in the frame bearing, to the outerextremity of the quill. A shaft 9 is journa'lled within the quill. Atone end of this shaft is a. large spur gear 10 adjacent the disk wheel8. The other end of this shaft carries a crank head 11, with a crank 12slidably' mounted therein so that its throw may he varied at will bymeans of the thumb screw 13. A motor `111 is mounted and a disk wheel 8is *keyed* upon pedestal 3 and engages spur gear 10 by means of pinion15.

Spur gear 10 and disk wheel 8 are PTO- vided with regi'strable holes sothat a pin 16 may be inserted therein for rotating the disk wheel. Asimilar hole 17 is provided in flange 5, and a eircularly arrangedseries of holes 18 in disk 6 are adapted to register with it. lf pin 16is in the position shown in Figure2, the rotation of the motor willrotate disk 6 at the same speed. If the pin removed from this positionand inserted through hole 17 and any one of the holes 18 as indicated bydotted line 19, the disk 6 will be locked to the. frame and be preventedfrom revolving. rlhe motor will then only y rotate shaft 9 and crank 12.

On the. outer face of disk G a pa' of A frames 2O are mounted, and aprojector 21 is rotatably supported on the A fra-mes by means of itstrunnions 22. The projector has a parabolic or other suitably shapedinterior refiecting surface, beam of light outwardly therefrom. Anelectric lamp 28 at the focus of the reeetor serves as the Isource oflight. As illustrated this lamp has one of its terminals grounded to theframe, and the other ter-- minal flexibly'connected by a lead 2e to afor projecting ay falling upon a screen slip ring 25 on the back of disk6. A. brush 26, suitably mounted on the traine, contacts with the slipring for leading current to the lamp. j

rThe projector 21 is given any desired angular position, and may also beoscillated in its trunnion bearings, by means ot a special slottedcross-head arrangement. This comprises a paiiI ot sliding rods 27, crossconnected by a pair ot spaced bars 28. Rods 27 'are longitudinallyslidable in the four guide bearings 29 mounted upon the face of disk 6.Crank pin 30 rotatably engages a shoe 31, and the latter engages bars 28and is slidable between them. Rotation ot the crank 12 will thus imparta reciprocating motion to this special built up slotted crossheadarrangement, and its travel will depend upon the throw of crank 12. Thelatter is adjustable by means ot thumb screw 13.

A cross shaft 32 is journalled between rods 27. It is enlarged at thecenter and is transversely drilled at 33 to slidingly engage the axialtail shaft 311 of the projector. the projector may be oscillate'd in itstrun nion bearings by the reciprocation ot' the slotted cross-head,.ormay be given any desired degree ot stationary angularity by properlypositioning the cross-head.

The wiring diagram of Figure 2 illustrates a convenient andsatistactpryI method lfor making the electrical connections of the de.-vice. doublepole, double throw, switch 35 has its hinge joints connectedto the armature o-the motor, by leads- 36. rlhe two outer pairs ofswitch 'contacts are reverseconnected with respect to each other, tothecurrent vsupply leads'37. Thus the current in the armature of themotor may be reversed by reversing the switch- The ield'of the motor isconnected' to the supply circuit through 4rheostat 38 and field leads39, and the rotative speed of the motor is thus ad- Current one of whichis shown grounded to the frame of the instrument. Grounding of thecircuit Iis not necessary if it is desired to provide an additional slipring and brush arrangement, as shown for the other connection of thelamp circuit. f

From the above description it will be evident that projector 21 may begiven any desired degree of angularity with respect to the axis of themachine by adjusting the efn fective length of crank 12 by means ofthumb screw 13. if the pin 16 is then positioned as shown in Figure 2,the crank anddisk 6. and all the parts mounted on the latter, may berevolved in unison by the motor. The beamof light sent out by theprojector will then describe a cone, and the spot of light erpendicularto the axis of the machine Wlll describe a circle.

Thus f -acter described, comprising;

lf the screen is oblique to the axis, the spot ot' light will describean ellipse. 'lhe speed and direction of motion of the light spot may beVaried by the motor controls.

lf pin 1G is positioned as shown by dotted line 19, the projector willbe given an oscillating movenient'when the motor is operated. rlheamplitude of the oscillation will depend upon the throw of crank 12 andthe latter Iisadjustable, a's mentioned above, by means ot thumb screw1S. The angular position of the oscillations with respect to the horizonmay be varied at will, by the selective use of holes 18.

Although l have .shown a pedestal type oi design .in illustrating myinvention, it is to be noted that a swivelling or universally mountedbracket may be substituted 'for the pedestal. When so mounted my devicemay be given an enlargediield of usefulness, as in treating patientswhile the eyes are rotated downward in the natural reading position. v

l claim as my invention: 1. An ocular exercising device of the characterdescribed, comprising; an oscillatory light projector mounted upon arotatable support; means or continuously oscillating the projector atselective fixed angular positions of the support; and means forcontinuously rotating the support with the optical axis of the projectorin selectively fixed obligue relation to the axis of rotation; both ofsaid axes intersecting the axis of oscillation at right angles at acommon point.

2. An ocular exercising device of the chara frame; a rotatable supporthaving a quill journalled in the frame; an oscillatory light projectormounted uponsaid support; a shaft journelled within said quill having atone-end a crank of variable throw'adapted for oscillating saidprojector; means for rotating said shaft independently of. the rotatablesupport; and means for rotating said support and said shaft together.

3. An ocular exercising device of the character described, comprising; aframe; a rotatable support havinga quill journalled inv the frame; anoscillatory light `projector mounted upon said support with itsopticalaxis intersecting the axis of rotationoi the support; a shaft journalledwithin said quill having at one end a crank of variable throw adaptedfor oscillating said projector; means l'for independently rotating saidshaft, with said' rotatable support in selectively ixed angularpositions; and means for rotating .said support and said shaft together,with the angularitypf the optical axis of the projector 1n selectivelyiixed relation to the axis of rotation. l

HARRY L. FUOG.

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